ppr 管材与钢管法兰连接 大口径的 ppr 管材，比如DN 110以上，PPR管材管件制造，可以通过法兰与钢管进行机械连接，只需要将法兰上的螺丝拧紧即可。 Large diameter PPR pipes， such as DN 110 or above， can be mechanically connected with the steel pipe through the flange， and only need to tighten the screws on the flange.
在给水管暗敷中试压问题，若不试压漏水将会很麻烦，好浇注地坪时给管道保压。漏水属于质量问题，按照规范要求进行打压，荆门PPR管材管件，严把熔接质量关。
The problem of pressure test in the concealed laying of water supply pipe will be very troublesome if there is no pressure test， so it is good to keep the pipe pressure when pouring the floor. Water leakage is a quality problem， according to the specification requirements for pressure， strictly control the welding quality.
目前，法兰连接中大的问题主要是法兰本身不合格和法兰连接不合格。
现在市场上销售的一些法兰存在的质量问题有：
①法兰的钢材不合格，耐压强度较低，在使用若干个月或若干个年后，出现渗水。
②法兰的螺栓孔外缘距法兰的边缘太小，小于5mm，在螺栓紧固时，PPR管材管件电话，易使法兰边缘。
At present， the major problems in flange connection are the unqualified flange itself and the flange connection is unqualified.
Some of the quality problems of the flange sold in the market are as follows:
① The flange steel is unqualified and the pressure resistance is low. After several months or years of use， water seepage occurs.
② The outer edge of bolt hole of flange is too ***all from the flange edge， less than 5mm. When the bolts are tightened， it is easy to make the flange edge.
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